Process for the prevention and laying of dust in roads, &amp;c.



WILLIAM MUNRO SANDlSUN, GE" Ell'lFlE-LD, AYTON, SCOTLAND,

ASSlGNOR 9F ONE-HAL no. emcee.

To all whom it may concern:

Be it known that 1, WILLIAM Merino SANDISON, a subject of His Majesty the King of Great Britain, residing at Ashfield, Ayton, in the county of Berwick, Scotland, have invented a certain new and useful process for the prevention and laying of dust through the application to roads or road material of an aqueous emulsion of Wool-washing suds or of Wool-lat or Wool-wax, with or withoutthe addition thereto of awdisinfecting-oil, of which the following is a specification.

The object of this invention is the prevention or laying of dust on road and street sure faces, in the Workings of mines, on the roadbeds of steam or electrically equipped roil- Ways, in portions of factories, and elsewhere through the employment of a sprinkling or saturating medium Whose composition can be adjusted to the varying nature of the surfaces or road-melting material to which it is to be applied and to the quantity and quality of dust liable to be produced thereon, while combining a hygroscopic action with loss liability to dispersion by atmospheric or other influences than is the case with simple sprinkling n edie, such as oils or watery emulsions of oils, which have heretofore been used. My invention is such utilization of the natural product known as wool l 'at oi wool-wax, which in the presence of an alkali possesses in a high degree the property oi cinulsiiicstion with water and has an ailinity for oily llltltlifi'illfil} may be mingled with ii. Unwashed Wool contains this waxy substance along with potash salts anti line sand charged with oleaginous matter which the r'aniilisr process washing by means of soap liberates in the form of suds. To render so ch suds still more suitable for use on or other surfaces or with IOilfl-Zlizililfig nizi' rial for the purpose in question, l add thereto an appropriate quantity of suitable oil or grease or oil-like substance, preferably such as possesses disinfectant pr .=perties -es, l r ere ample, creosote which tends to rcmler the h; g est-epic tilts still more deliqucscent:bu otl er rlisiinuztunt substances suitable for the (iGlXii is eet n- .1se may be employed. id suds applied by satur up; apoaratus are readily libs ce. by dust, dry so: or the like, to the articles (3 lllilRBEltll NEWTON, lvlASSACl-lUSlQTTlS. I

PRUQESS FGR THE FREVEHTlGll All?) Specification of Letters Iiatent.

Application filed February 28, 1905. Serial lie. 247,833.

(12' MGKERRO'W, OF

iriillfi DUST lil RQADS, lic.

Patented Feb. 20, 3A '38.

. tenuou no.5. circle; is. loam. or which the-wool rat or wax adheres tenaciously, While the mineral matter contained in it and deposited in the interstices of road metal or street paving adds to its dust preventive or laying powers which become further augmented by the hygroscopic action of the potash salts in abstracting and retaining 6o moisture from the atmosphere, so that after even a slight the treated surfaces appear nioist for hours after untreated surfaces have become dryj Obviously from their bulk the economical use of such disinfectant suds is practicable only in the immediate Vicinity of wool-Washing establishments. For more remote use "freight considerations render a con centre ted condition necessary. To. comply with this, the suds are condensed, as by evap- 7o oration. After condensation to render them still more suitable for my nrpose I mix tlic'rn with suitable oils or other substances, as those above indicated, to such a degree of consistenc that the semili uid mass can be afterward reedilyfurther iluted bywater to the degree necessary for its application. by means of the spraying or saturating apparatus. in l similarly utilize and trc t oil or other aforesaid, coi'icentrated or other-suds from which the more valuable portion of the week fat or wax has been abstracted by centrifugal action or otherwise, leaving a solution containing some lower grade wool-greesoSs along with soap potash salts, and a very fine mineral 311i lsunilurly utilize and treat n' n l; or concentrated form suds or poor in potash suits owing to 1 c removal thereof iroro the Wool by the cell-known system or" steeping in water hetr "e soap-wsshing operations commence. in such cases usually add deliquescent salts to secure desired. hygroscopic action.

also make of commercial Wool grease or 9 5 wax-for instance, such as produced by the French pattage system and by the acidcrevkieig, evaporation followed by settling and slziimuiizg, evaporation followed by eel-t trii ugal treatment, and the naphtha or other solvent recesses, all well-known processes and I see utilize such im ure combinations wool grease or won as may result from ose TECCWfi-l'f/ processes which treat Wooltrade and domestic ellluenlts. Sucl igreases substances, such as 8o lung surls in combination with other re;

' matter the 'umitii of which me I waxes with Wiiifl) in any reiiGLi extent by using; suitable alkali, prei cerbonete of potash on account of its ,ucscopic cure. i usually side a suit :l'llic quantity of oil or other substances, sucb hereinbcioi e mentioned as being added to suds, enzl I regulate the density of the cclw 'iiozi as; required. To ellect the more durable loxlgment of the material in the crevices unri interstices of the surfaces to be treated, I sometimes further arid to the emulsion or solution finely-divided sand or other mineral be Jaried,

but is such not to metez'ielly interfere with me uiai nature of the emulsion or solution.

' 'umc 1 may give additional body to smile and grees or waxy solutions is helices: Lleecribeci by incorporating iiiei'ewiclu suitable mineral limiter of an Lily ecreent anal geeeeeweteining nature, ful- The strength of 5216 emulsions m solutions; and the proportions of the vayious sub-stances mentioned sent tacrein cc be varied Within wide limits without departing; from Ieetui'e of Line invention. lneieed e1 meeting ready-formed reeds or Elie like wiih pieperetion's produced hereinbefore described I may in some ceees treat stone paving, romi metal, or other road-maknmizeraiel price to its use in road consfiuc- I t-ion oz i'epeirinp; opcrations'or during its uric In like consiruction er yepairingg operations 1'1 such n For the treatment of wood paving, which 7 1 v 1 0 a mg oi oily or greasy EiQlUUOHS 0 IL I 1 v @1611 such hereinnefore described, so that w cue; she sc-ii'eeilcd send or the :ke has been i .i; no? :uble.

soluiion ace foiii'ze c n of course be widely to the local conditions u x may be zuldcal in each of the wne ornoiutiens hereinbci'ore described,

1, such emulsion or solution elmll act nofi n1. or ieyciust on the uni, sweet, euiffuce, but also to disinfect such M. or iii/i101 H. 1 mes, st.

q uentfiy incci 3. The pmcess l: .in described for laying (lust, which came 1 tin: application to the surface of E'UliflS or pew/ennui (lre sing of an aqueous ez'nuleion obtained by combining wool-inc with en ellicii or alkaline salt, substantially m; described.

2. The pro! as; herein described for lnjiiw' (lust, which consists in the application to ii: surface of roads; or io pavement (Missing; oi en aqueous emulsion obta ned by cmnbining wool-fmwitben ellieliorulluilii'ic selt,e1ul an: oil-like substance, preferably creosote, nul starotially as described.

3. The herein described process for the prevention of (lust, which consists in the application to tbe surfece of roads or "Lo :1 road dressing, of e Water-diluted emulsion obtained by combining wool-scouring suds with a suitab oil, or oil-like sul'istmicc, prel'erably possessing disinlmatent properiics, 05s for exum ole creosote, sulmrizniticlly as llGS'f-I'llflid.

Flee process of laying (iii which consists in the application to or suturultion of the surface by 1L substance obtained, by concenfirming wool-scouring suds and combining with it an oil-like substance, preferably ci'eo cote, to oi'mlucc a mess of scmilii'uiil consistency, (lilutuble by water, for lie purpose specified. A

5. The process of ,os'cuenting (lust, which consists in the u'iplicutio'n to the surface of Foods or to eroeo dressing cl a substance obtained by concentmiting wool-scouring suds, and adding to such cede as are lacking of poo! in natural potash sails, a (leli: ueeccnt salt, and cc-mbining with i'ian oil-l1l-1e substance, pi'ei'ci'zibly creosote, {,0 uoduce e mess of scmiliuuid cmmis'lency :iilulnble by Water, for the purpose epeciiied.

6. The prccesa oi laying (lust, which conin the ugipliceiion to be :surl'uce of roads of an aqueous emulsion of ii'ool-l'ul combined with alkali or alkaline unit preferably of u deli- (uescent nature, and containing in addition we mineral mutter 02' an ebsorlmm, and grease-1'etaining canine, mbsimitielly as specified.

molfl-acouring e and sul 1 Hi oilas p alum u, e M ii- .iliilli nines of ecmilii .-;ubi-ii.uoliulljv 0i '2, sulleby c 'icenimiingg' the ing to s (ab ccninirzzicsi su or rom in nut-L ei poi: l cen salt and by cowbining like substance, on i time :1 mass o; sens; able by Water, eubctemieiiy 214-;

9. The p ocese of treciingg wool-fut. by edcl ing suitebie eikeli an? alkaline cult, prei'emblv of e Lleliquescent :amiurc end by combini therewith an oil-like substance, referably waxes combined with an alkali or alkaline i5 creosote, to produce a mass of semi iquid consalt, substantially as described. sistency dilutable by water, substantlally as 12. The process for preventing dust, which specified. consists in s rayin'g a surface with a water 10. The process herein described for laying diluted emu sion composed of animal eases dust, which consists in the application to the or fats, an alkali or alkaline salt, re erably 20 surface of roads of an aqueous emulsion obof a delique scent nature, and an o1 -like sub tainedby combining the concentrated greases, stance, preferably creosote, substantially as fats or waxes recovered from trade or domesdescribed.

tic efiluents or wastes wi th an alkali or alkav WILL] HI MUNRO SANDISON line salt, substantially as described.

1 1. The process for preventing dust, which Witnesses:

consists in the application to a surface of an CHARLES OBDWAY,

aqueous emulsion of animal greases, fats or ALFRED Rmnsxox r. 

